I think this, if it gets a rolls, is definitely something to spend omake points on to improve chances. It does quite a bit. It'll likely improve our standing with Chao; potentially big chunks of the Wang, Meng, and Luo plus their underlings (like the Old Clans under the Luo already have a 2, I wonder what a 3 from them would do to our Luo rep, maybe we can score good herding animals from them); Chao's own reputation is affected; and while it may offend conservatives of all stripes, if we can just have them be a bit scandalized and a bit huffy about a tasteful mix, like not what should be happening obviously is should be properly [Weilu/Imperial]! but nothing that you can really nit pick at without being seen as an asshole.
It could have some serious knock on effects. Trying to hybridize the culture is big work, and this is probably the biggest work we've done so far. Hanyi's concerts and music can be seen as an indulgence for a near human spirit, but this will be a roight propa Neo-Weilu gala. The first of it's kind, and we want to set good tones for it. It'll even be a nice thing to point at in our letters as roight propa Emerald Seas national kultcha, and if it goes well, Wang Chao will do more (and write home about his successful parties with a glowing tone like he did about Ling Qi), and who knows it might impress the Wang Matriarch (Who sounds very much like a Weilu Reformer/Neo-Weilu) on a personal level and she might hold a Neo-Weilu Gala, say, with the Meng invited (and probably all of the count clans it'd be a big snub to not invite them), improving relations between the two clans that they can point to little Ling Qi and her backer the Heiress.
So this is something we really do want to go well. The positive effects would be pretty far reaching, the negative effects could set us back a lot. I don't think it'd strangle the Neo-Weilu thing in the crib, but it'd definitely be ammunition for a few years. (That silly Wang Chao and Ling Qi! Oh the poor Heiress with her uncouth retainer! How dare they besmirch the [Empire/Weilu] culture!]